321345222543109 has 2 divisors, whose sum is σ = 321345222543110. Its totient is φ = 321345222543108.

The previous prime is 321345222543101. The next prime is 321345222543139. The reversal of 321345222543109 is 901345222543123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191812029542884 + 129533193000225 = 13849622^2 + 11381265^2 .

It is a cyclic number.

It is not a de Polignac number, because 321345222543109 - 2³ = 321345222543101 is a prime.

It is a super-3 number, since 3×321345222543109³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321345222543101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160672611271554 + 160672611271555.

It is an arithmetic number, because the mean of its divisors is an integer number (160672611271555).

Almost surely, 2^{321345222543109} is an apocalyptic number.

It is an amenable number.

321345222543109 is a deficient number, since it is larger than the sum of its proper divisors (1).

321345222543109 is an equidigital number, since it uses as much as digits as its factorization.

321345222543109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 321345222543109 in words is "three hundred twenty-one trillion, three hundred forty-five billion, two hundred twenty-two million, five hundred forty-three thousand, one hundred nine".